After the Autobots finally defeated their arch-nemesis, Megatron, they were allowed to return home to Cybertron. Leaving the kids was difficult, as they had become like family, but home was home. You chose to stay behind to watch over Earth, a tough decision given your long-held dream of seeing Cybertron in its prime again. It was especially hard to part ways with Optimus, your old friend and something more.